Joachim held off the attentions of Thomas Vermaelen to take down a long ball, before lashing in with his left foot, and the same player caught Vincent Kompany napping in the 17th minute, only for Bossut to deny him with an impressive save.

Fellaini headed a corner over before Lukaku got his second with 23 minutes gone, as he pounced after Maxime Chanot's attempted clearance fell into his path, and scored, via a ricochet off Moris.

Lukaku lifted over Moris – but wide – and his search for a treble went on as the goalkeeper saved superbly to his right three minutes before the break.

Januzaj was one of Wilmots' five half-time changes and saw Lukaku become the first player to score a hat-trick for Belgium since Bob Peeters achieved the feat in 2001.